function abrirVentanaId (destino, id, anchura, altura, sc)
{
  xposition = 0;
  yposition = 0;
  var param = "";

  if ((parseInt(navigator.appVersion) >= 4) && (1))
  {
    xposition = (screen.width - anchura) / 2;
    yposition = (screen.height - altura) / 2;
  }

  param = "width=" + anchura + ","
        + "height=" + altura + ","
        + "location=0,"
        + "menubar=0,"
        + "resizable=0,"

  if (sc == "S")
    param = param + "scrollbars=yes,";
  else
  {
    param = param + "scrollbars=no,";
    param = param + "status=0,"
          + "titlebar=0,"
          + "toolbar=0,"
          + "hotkeys=0,"
          + "screenx=" + xposition + ","
          + "screeny=" + yposition + ","
          + "left=" + xposition + ","
          + "top=" + yposition;
  }
  window.open(destino, id, param);		
}


function accion(formulario,universidad,mostrar_desplegable)
{
  formulario.universidad.value=universidad;
  formulario.mostrar_desplegable.value=mostrar_desplegable;
  formulario.submit();
}